US2522416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Holder for microscope slides
Assignee: Individual
•
Filing: 1947-08-21
•
Granted: 1950-09-12
•
Expires: 1967-08-21
Abstract
No abstract record available.
Inventors
- 👤 Weiskopf Edwin Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:34
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/28; G01N1/30; G01N1/31; G01N1/312
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US312742A
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US350987A
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US439210A
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US548767A
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US1229428A
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US1747681A
Cited
US1780061A
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US2058128A
Cited
US2341198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-11 | 1954-03-13 | 1954-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-11 | 1958-03-13 | 1958-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-11 | 1962-03-13 | 1962-09-12 | $7700.00 | Window Closed / Lapsed |